1.25 in 1 Card Reader 2.Single Lun original IC support 3.Plug & play 4.Auto detect card memory 5.Transmit speed Up to 480 Mbps/sec 6.Support high speed memory card 7.Support USB port power 8.Dimension:59*17*9mm 9.Weight:7.6g 10.System Requirements:Win 98/ME/2000/XP/Vista/7/Mac9 by vendor driver